Heat-insulating block



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By www @W7 H A ORNEY Patented pr. 9, 1929. A UNlTEDp STATES PATENT OFFICE.

WALTER LIGHT IBODHAN', OF NEW YORK, N. Y.

HEAT-INSULATING BLOCK.

Application led July 28, 1926. Serial No. 125,468.

My invention relates to improvements in l Figure 4 is a broken face view ofthe block heat insulating blocks, and the object of my provided with internal braces and with the invention -is to produce a very cheap, simple, cementitious cover` or casing, and and highly efficient block which can readily Figure 5 is a cross-section on the line 5 5 be built up into the form of a wall, and which of Figure 4. 1 will afford a substantially perfect insula\'1n carrying out my invention the form of `tion against heat. My invention comprises box which` forms the bases of the block is not in its simplest form a box of cheap material material except that it is preferably rectanwhich is rendered impervious to air, gas, and gular, as this shape is more convenient for water, and which can be filled with a heavy. use, but it'may be a plain carton comprisinsulating gas such for example asa carbon ing the members 10 and 11 (see ,Figure 2) dioxide. It is known that this and some other which have their edge portions shaped to fit -gases are almost perfect insulators against one over the other in a. well known manner. heat transmission, but these gases have not The box can be paper board, libre board, or generally been used because of the diiiiculty any other suitable cellulosic material, which is of confining them. I" find, however, that I preferaby treated to make it lirm and Water can take a simple box, for example of pasteand air proof, but this is best accomplished board or fibre board, in the form of a carby coating the outside of the box with a layer ton, and water-proof this in any usual Way, of lead foil 12, which is closely incorporated and perfectly coverit with a metal foil, for with the box material, covers the joints, and

l example lead foil, which may be incorporated the two parts of which do not meet, thus provei'y firmly with the fibre box, after which viding for better insulation. The invention the air may be forced out and the gas forced is not limited to this form of seal, however. in and sealed, making a block which is pref- The box can be provided with holes 13, and 14 erably rectangular like a block or tile, which for admitting the gas and excluding air. For is very cheap, and which affords excellent example a heavy gas like carbon dioxide can insulation. Moreover such a. block can be be admitted through the opening 13, and as it easily built up into the form of a Wall, and is heavier than air, it will force the air out the Wall thus made can be covered on one through the opening 14, and when thebox is or both sides to give it additional strength filled with gas, both openings can be plugged or for embellishment. Such a structure can or closed in any convenient Way, or the air be used to advantage in the manufacture of can be exhausted through one of the openings household refrigerators, light Walls, and in and the gas admitted throu h the other. fact in any Wall which is intended to provide The box can if desired, either in its simple against the passage of heat through it. My form or in its encased form, have one end idea canv be carried out further in providing concave as at 15 and the other convex as at the simple box above referred to with braces 16, so thatthe edge of one block will tit snugto give it additional strength, and if dely into the edge of the next adjacent block sired the whole can be encased in gypsum 01' when the blocks are laid in a wall. If addiother cement or cementitious substance, maktional strength is desired, the box can be intering it substantially a tile or block with an innally braced, as for example by braces or parternal container for the insulating medium. titions 17 running from corner to corner as in All this Will be better understood from the Figure 4, and the partitions shown have description which follows. openings 18 therethrough so that the gas Reference is to be had to the aCCOmpnycan flow from one chamber to the other. ing drawings forming a part of this speciii- Where a substantial wall is to be made, the cation, in which similar reference characbox above described can be covered with a ters indicate corresponding parts in all the cementitious casing 19 of gypsum, cement, or views. the like, and when thus made it will be to Figure 1 is a face view of'an insulating all intents atile. block showing my invention in its simplest It will be seen that in either form the block form. affords a tight container for the insulating Figure 2 is a cross section on the line 2--2 gas and that it can be laid in Wall form as of Figure 1. readily as can the ordinary brick or tile. Figure 3 is a plan view or top edge view If desired the blocks can be laid in cement,

of the block with its cement-itious encasement. or they can be held in any convenient Way between exterior Wall coverings. In fact the block can be used precisely as ordinary tile or brick.

I claim 1. As an improved article of manufacture, a heat insulating block comprising a gas tight box composed of like cellulosic material, said box being formed of a pair oftelescopic sections, a coating of metal foil on the outside of said box, a casing completely surrounding said block and foil, and a casing contained Within said block. l

l 2. A heat insulating block comprising a air of telescopic sections, a layer of metal toil partially surrounding said .box on one 15 In testimony whereof, I have signed my 20 name to this specification this 27th day of July, 1926.

W'ALTER LIGHT BODMAN. 

